Abstract:
:The present study tested the prediction that D-cycloserine (DCS), a partial N-methyl-D-aspartate agonist, would facilitate extinction of conditioned freezing in male Sprague-Dawley rats. Rats received 5 light-shock pairings (conditioning). The following day, rats received 6 light-alone presentations (extinction training). Twenty-four hours later, rats received 1 light-alone presentation (test). Subcutaneous DCS injection before or after extinction training significantly enhanced extinction, and the dose-response curve for this effect was linear. Increasing the delay of DCS administration after extinction training led to a linear decrease in the facilitatory effect. The effect of systemic administration was replicated by intra-basolateral amygdala infusion. These results suggest that DCS facilitates extinction of conditioned freezing by acting on consolidation processes partly mediated by the basolateral amygdala.
journal_name
Behav Neuroscijournal_title
Behavioral neuroscienceauthors
Ledgerwood L,Richardson R,Cranney Jdoi
10.1037/0735-7044.117.2.341subject
Has Abstractpub_date
2003-04-01 00:00:00pages
341-9issue
2eissn
0735-7044issn
1939-0084journal_volume
117pub_type
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